Katy, TX Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Katy, TX in one place.
Sunny, with a high near 98. Heat index values as high as 104. Northeast wind 0 to 10 mph.
Local Weather Overview
This forecast page for Katy, TX is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Sep 22, 2026 8:32 AM CDT.
The active forecast window currently covers Sep 23 to Sep 28, 2026 for Katy, TX.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 23 to Sep 28, 2026
- Latest sync
- Sep 22, 2026 8:32 AM CDT
- Forecast office
- HGX
- Source
- NOAA / NWS
Daily Outlook
This Week in Katy
Wednesday looks like the warmest upcoming period in Katy at 98 degrees F.
Friday Night is the coolest period ahead with temperatures near 74 degrees F.
The strongest winds are forecast for Wednesday at about 0 to 10 mph NE.
The forecast from Sep 23 through Sep 28 stays mostly dry.
Forecast Details
- Last updated
- Sep 22, 2026 8:32 AM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- HGX
- Radar station
- KHGX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Partly cloudy, with a low around 78. Heat index values as high as 102. East wind 0 to 10 mph.
Mostly sunny, with a high near 97. Northeast wind 5 to 10 mph.
Partly cloudy, with a low around 75.
Mostly sunny, with a high near 96.
Partly cloudy, with a low around 74.
Mostly sunny, with a high near 96.
Partly cloudy, with a low around 75.
Mostly sunny, with a high near 96.
Partly cloudy, with a low around 76.
Mostly sunny, with a high near 95.
Partly cloudy, with a low around 76.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Sep 23
|
Sunny
|
98°F |
0 to 10 mph
NE
|
|
Wednesday Night
Sep 23
|
Partly Cloudy
|
78°F |
0 to 10 mph
E
|
|
Thursday
Sep 24
|
Mostly Sunny
|
97°F |
5 to 10 mph
NE
|
|
Thursday Night
Sep 24
|
Partly Cloudy
|
75°F |
0 to 10 mph
NE
|
|
Friday
Sep 25
|
Mostly Sunny
|
96°F |
5 mph
NE
|
|
Friday Night
Sep 25
|
Partly Cloudy
|
74°F |
0 to 5 mph
E
|
|
Saturday
Sep 26
|
Mostly Sunny
|
96°F |
0 to 5 mph
E
|
|
Saturday Night
Sep 26
|
Partly Cloudy
|
75°F |
0 to 5 mph
SE
|
|
Sunday
Sep 27
|
Mostly Sunny
|
96°F |
0 to 5 mph
SE
|
|
Sunday Night
Sep 27
|
Partly Cloudy
|
76°F |
0 to 10 mph
SE
|
|
Monday
Sep 28
|
Mostly Sunny
|
95°F |
0 to 10 mph
SE
|
|
Monday Night
Sep 28
|
Partly Cloudy
|
76°F |
5 to 10 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Katy.
